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Finding the Third Proportional to 490 and 588

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Solution

The third proportional to 490 and 588 is: 705.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    490 : 588 = 588 : x
  2. Step 2: Convert to fraction form
    490/588 = 588/x
  3. Step 3: Cross multiply
    490x = 588 × 588
  4. Step 4: Simplify right side
    490x = 345,744
  5. Step 5: Solve for x
    x = 345,744/490
  6. Step 6: Final answer
    x = 705.60

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These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.